mobile workshop vario v electronic for having the right speed for the material adjusting wheel for speed control clockwise anticlockwise rotation mandrel with interior hexagonal for screwdriver bits so you can work without drill chuck technical details nominal input power 650 w output rate 320 w drilling diameter into concrete 16 mm steel 13 mm drilling diameter into soft wood 30 mm idling speed 0 2800 revsmin speed under nominal load 1500 min maximum blow